# duty cycle

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## duty cycle

[′düd·ē ‚sī·kəl]
(communications)
The product of the pulse duration and pulse repetition frequency of a pulse carrier, equal to the time per second that pulse power is applied. Also known as duty factor.
(electronics)
(engineering)
The time intervals devoted to starting, running, stopping, and idling when a device is used for intermittent duty.
The ratio of working time to total time for an intermittently operating device, usually expressed as a percent. Also known as duty factor.
(metallurgy)
The percentage of time that current flows in equipment over a specific period during electric resistance welding.
(nucleonics)
The fraction of time during which a pulsed accelerator beam is on target, usually expressed as a percent. Also known as duty factor.

## duty cycle

(1) A machine's rated capacity to continuously perform work under normal conditions. It generally applies to mechanical devices such as printers, in which case it would indicate the number of pages that can be printed per month without a problem.

(2) The ratio of a device operating versus cooling down. An 80% duty cycle means that it is capable of running 80% of a specified time period and turned off for the remainder.
References in periodicals archive ?
This plot indicates that the average current and the dither amplitude are restricted in the conventional PWM method because it varies the duty cycle only at a fixed frequency.
Instead of the simplified profile, it would be very valuable to retrieve the duty cycle from real world data.
Next, we looked at the temperature as a function of duty cycle at two different frequencies, 100Hz and 10KHz.
It can be seen that the switching frequency of the converter has been held constant even with a large variation in the duty cycle over one period.
The duty cycles of these PWM are proportional to entered speed.
IN], whose magnitude is determined by the duty cycle of the switch S1.
Chung, "Unsynchronized duty cycle control for home automation networks," in Proc.
Depending on the duty cycle of the PWM signal, the average DC output given out by the buck converter changes.
The basic balancing approach involves measuring the current from each power stage and adjusting the DPWM duty cycle for each phase to equalize their currents.
Magnets are insulated coils that when run at too high of a duty cycle can become hot, deteriorating the insulation and causing a short.
Both Quantum's SDLT 320 drives and LTO Ultrium 2 drives--like HP's StorageWorks Ultrium 460--are rated at 250,000 hours MTBF at a 100% duty cycle.
Featuring an unlimited duty cycle rating, these sensors can be pressure-washed and have no moving parts.

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